This firmware is signed. This means that you can restore to it in iTunes.
Release Date | 26 July 2021 |
Upload Date | 21 July 2021 |
File Name | UniversalMac_11.5.1_20G80_Restore.ipsw |
File Size | 13.01 GB |
SHA256sum | fff098d7aef8c0003de27d889179f73e810db935c3cc60ba821367214f751ece |
MD5sum | ca48d5c5ad8684e0a3e74639f900236a |
SHA1sum | c509056720fa190fda61c78b1b67ad42853228b5 |
Identifier | MacBookPro17,1 |
cd ~/Downloads
.idevicerestore -e UniversalMac_11.5.1_20G80_Restore.ipsw
and press Enter.